1：Experimental Design and Method Selection:

The design involves cascading two nonlinear resonant rings in a 2D photonic crystal structure, utilizing the Kerr effect for nonlinear behavior. The finite difference time domain (FDTD) method with RSoft photonics CAD software was used for simulations.

2：Sample Selection and Data Sources:

The structure is composed of dielectric rods with specific parameters (radius 121 nm, lattice constant 607 nm) and nonlinear rods made of doped glass (refractive index 1.4, Kerr coefficient 10^-14 m2/W).

3：4, Kerr coefficient 10^-14 m2/W). List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Simulation software (RSoft photonics CAD), theoretical models for photonic crystals and Kerr effect.

4：Experimental Procedures and Operational Workflow:

Simulations were performed with grid sizes of 37.9 nm and time step of 0.024 ns, using Gaussian optical waves at 1572 nm wavelength. Input states (A and B) were varied to observe output responses at ports O1 and O

5：9 nm and time step of 024 ns, using Gaussian optical waves at 1572 nm wavelength. Input states (A and B) were varied to observe output responses at ports O1 and OData Analysis Methods:

2. 5. Data Analysis Methods: Output power and delay times were measured from simulation results to determine logic gate functionality and bit rates.